PT 7 S4 Q24

One sure way you can tell how quickly a new idea—for example, the idea ... ...

The method described above for determining how quickly a new idea is taking hold relies on which one of the following assumptions?
(A) Dictionary editors are not professionally interested in words that are only rarely used.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in NP: Practice Set 3 - Mix (25 Q)